MARKLAND TECHNOLOGIES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6876330 Reconfigurable antennasExpiredJul 16, 03Apr 05, 05[H01Q]
6842146 Plasma filter antenna systemExpiredFeb 25, 02Jan 11, 05[H01Q]
6812895 Reconfigurable electromagnetic plasma waveguide used as a phase shifter and a horn antennaExpiredFeb 21, 01Nov 02, 04[H01P, H01Q]
6710746 Antenna having reconfigurable lengthExpiredSep 30, 02Mar 23, 04[H01Q]
6624719 Reconfigurable electromagnetic waveguideExpiredApr 05, 00Sep 23, 03[H01P]
6512496 Expandible antennaExpiredJan 17, 01Jan 28, 03[H01Q]
6369763 Reconfigurable plasma antennaExpiredApr 05, 00Apr 09, 02[H01Q]
5990837 Rugged gas tube RF cellular antennaExpiredJan 13, 97Nov 23, 99[H01Q]
5594456 Gas tube RF antennaExpiredSep 07, 94Jan 14, 97[H01Q]

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